import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'

Vue.use(VueRouter)
const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: Login },
  {
    path: '/home',
    component: Home,
    redirect:'/welcome',
    children: [
      { path: '/welcome', component: Welcome },
      { path: '/users', component: Users },
      { path: '/rights', component: Rights },
      { path: '/roles', component: Roles }

  ]
  }
]
const router = new VueRouter({
  routes
})
//  挂载路由导航守卫 to将要访问的路径 from从哪个路径跳转
//  next()是函数表示放行next('/login')强制跳转
router.beforeEach((to, from, next) => {
  if (to.path === '/login') return next()
  //  获取token
  const tokenstr = window.sessionStorage.getItem('token')
  if (!tokenstr) return next('/login')
  next()
})
export default router
